MERCEDES-BENZ

LI07.70-P-080607

2026-06-03 · NHTSA 11033386

A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

Manufacturer summary

Original wording in English

Complaint Check engine light activated. Fault codes related to misfire on multiple cylinders stored. Possible fault codes listed below: P030004 - Combustion misfiring has been detected. There is an internal fault. P030100 - Combustion misfiring of cylinder 1 has been detected P030200 - Combustion misfiring of cylinder 2 has been detected P030300 - Combustion misfiring of cylinder 3 has been detected P030400 - Combustion misfiring of cylinder 4 has been detected P030500 - Combustion misfiring of cylinder 5 has been detected P030600 - Combustion misfiring of cylinder 6 has been detected P031600 - Combustion misfires were detected at engine start. Cause Under analysis Remedy Note: If the vehicle has a single cylinder misfiring or a constant misfire, diagnose the cause of this separately. This LI document is not relevant in this scenario. Collect details from the vehicle owner: • What did the driver experience/feel when the CEL activated? • What is the driving scenario when the symptom occurs? (i.e. time of day, vehicle speed, electric driving/ICE driving, etc.) • How often has this symptom been experienced? • How often is the vehicle recharged and driven in electric mode? • When was the last time the fuel tank was refueled, brand, quality of fuel? Save document from the vehicle: • Initial quick test with freeze frame data • Control unit log from Engine control unit N3/10 • Control unit log from Powertrain control unit N127 • HV system control unit log Additional steps: 1. Perform test drive and attempt to reproduce symptom as described by owner 2. Capture a fuel sample and check for abnormal condition or ethanol content 3. Create a TIPS case with the powertrain team and include all above information/documents and any additional observations.

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